msr.c (4ba24fef3eb3b142197135223b90ced2f319cd53) msr.c (b25472f9b96159cc0b9b7ed449448805973cd789)
1/* ----------------------------------------------------------------------- *
2 *
3 * Copyright 2000-2008 H. Peter Anvin - All Rights Reserved
4 * Copyright 2009 Intel Corporation; author: H. Peter Anvin
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, Inc., 675 Mass Ave, Cambridge MA 02139,

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40#include <linux/uaccess.h>
41#include <linux/gfp.h>
42
43#include <asm/processor.h>
44#include <asm/msr.h>
45
46static struct class *msr_class;
47
1/* ----------------------------------------------------------------------- *
2 *
3 * Copyright 2000-2008 H. Peter Anvin - All Rights Reserved
4 * Copyright 2009 Intel Corporation; author: H. Peter Anvin
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, Inc., 675 Mass Ave, Cambridge MA 02139,

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40#include <linux/uaccess.h>
41#include <linux/gfp.h>
42
43#include <asm/processor.h>
44#include <asm/msr.h>
45
46static struct class *msr_class;
47
48static loff_t msr_seek(struct file *file, loff_t offset, int orig)
49{
50 loff_t ret;
51 struct inode *inode = file_inode(file);
52
53 mutex_lock(&inode->i_mutex);
54 switch (orig) {
55 case SEEK_SET:
56 file->f_pos = offset;
57 ret = file->f_pos;
58 break;
59 case SEEK_CUR:
60 file->f_pos += offset;
61 ret = file->f_pos;
62 break;
63 default:
64 ret = -EINVAL;
65 }
66 mutex_unlock(&inode->i_mutex);
67 return ret;
68}
69
70static ssize_t msr_read(struct file *file, char __user *buf,
71 size_t count, loff_t *ppos)
72{
73 u32 __user *tmp = (u32 __user *) buf;
74 u32 data[2];
75 u32 reg = *ppos;
76 int cpu = iminor(file_inode(file));
77 int err = 0;

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189 return 0;
190}
191
192/*
193 * File operations we support
194 */
195static const struct file_operations msr_fops = {
196 .owner = THIS_MODULE,
48static ssize_t msr_read(struct file *file, char __user *buf,
49 size_t count, loff_t *ppos)
50{
51 u32 __user *tmp = (u32 __user *) buf;
52 u32 data[2];
53 u32 reg = *ppos;
54 int cpu = iminor(file_inode(file));
55 int err = 0;

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167 return 0;
168}
169
170/*
171 * File operations we support
172 */
173static const struct file_operations msr_fops = {
174 .owner = THIS_MODULE,
197 .llseek = msr_seek,
175 .llseek = no_seek_end_llseek,
198 .read = msr_read,
199 .write = msr_write,
200 .open = msr_open,
201 .unlocked_ioctl = msr_ioctl,
202 .compat_ioctl = msr_ioctl,
203};
204
205static int msr_device_create(int cpu)

--- 101 unchanged lines hidden --- 		176 .read = msr_read,
177 .write = msr_write,
178 .open = msr_open,
179 .unlocked_ioctl = msr_ioctl,
180 .compat_ioctl = msr_ioctl,
181};
182
183static int msr_device_create(int cpu)

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